Application of Uniconazole Improves Photosynthetic Efficiency of Maize by Enhancing the Antioxidant Defense Mechanism and Delaying Leaf Senescence in Semiarid Regions
The degradation of photosynthetic pigments leads to leaf senescence and thus grain yield losses. We determined whether the application of uniconazole to maize in semiarid regions could reduce the degradation of photosynthetic pigments by enhancing the antioxidant defense system. We conducted a field...
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| Veröffentlicht in: | Journal of plant growth regulation 2019-09, Vol.38 (3), p.855-869 |
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| container_title | Journal of plant growth regulation |
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| creator | Ahmad, Irshad Kamran, Muhammad Su, Wennan Haiqi, Wang Ali, Shahzad Bilegjargal, Bayasgalan Ahmad, Shakeel Liu, Tiening Cai, Tie Han, Qingfang |
| description | The degradation of photosynthetic pigments leads to leaf senescence and thus grain yield losses. We determined whether the application of uniconazole to maize in semiarid regions could reduce the degradation of photosynthetic pigments by enhancing the antioxidant defense system. We conducted a field study in the summers of 2015 and 2016 where seeds were soaked in uniconazole at concentrations of 0 (CK1), 25 (S1), 50 (S2), and 75 (S3) mg kg
−1
and foliar sprayed at concentrations of 0 (CK2), 25 (F1), 50 (F2), and 75 (F3) mg L
−1
at the eight-leaf stage. The application of uniconazole significantly improves the chlorophyll content, soluble protein content, and net photosynthetic rate, where the maximum values were obtained with the S1 and F1 treatments. Uniconazole significantly improved the activities of antioxidant enzymes comprising superoxide dismutase, peroxidase, and catalase, but reduced that of malondialdehyde (MDA) and the accumulation of reactive oxygen species (ROS) during the leaf senescence process. Treatments S1 and F1 had higher antioxidant enzyme activities but reduced MDA, superoxide radical, and hydrogen peroxide contents. Uniconazole significantly reduced leaf senescence in leaves in the bottom layer, while also increasing the middle layer leaf area and decreasing the top layer leaf area. The degradation of photosynthetic pigments was reduced by uniconazole because the enhanced antioxidant activities of enzymes protected plants from harmful ROS. Uniconazole significantly improved the photosynthetic traits, antioxidant defense system, and grain yield in maize in semiarid regions, where the most effective treatment was S1. |
| doi_str_mv | 10.1007/s00344-018-9897-5 |
| format | Article |
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−1
and foliar sprayed at concentrations of 0 (CK2), 25 (F1), 50 (F2), and 75 (F3) mg L
−1
at the eight-leaf stage. The application of uniconazole significantly improves the chlorophyll content, soluble protein content, and net photosynthetic rate, where the maximum values were obtained with the S1 and F1 treatments. Uniconazole significantly improved the activities of antioxidant enzymes comprising superoxide dismutase, peroxidase, and catalase, but reduced that of malondialdehyde (MDA) and the accumulation of reactive oxygen species (ROS) during the leaf senescence process. Treatments S1 and F1 had higher antioxidant enzyme activities but reduced MDA, superoxide radical, and hydrogen peroxide contents. Uniconazole significantly reduced leaf senescence in leaves in the bottom layer, while also increasing the middle layer leaf area and decreasing the top layer leaf area. The degradation of photosynthetic pigments was reduced by uniconazole because the enhanced antioxidant activities of enzymes protected plants from harmful ROS. Uniconazole significantly improved the photosynthetic traits, antioxidant defense system, and grain yield in maize in semiarid regions, where the most effective treatment was S1.</description><identifier>ISSN: 0721-7595</identifier><identifier>EISSN: 1435-8107</identifier><identifier>DOI: 10.1007/s00344-018-9897-5</identifier><language>eng</language><publisher>New York: Springer US</publisher><subject>Agriculture ; Antioxidants ; Biomedical and Life Sciences ; Catalase ; Chlorophyll ; Corn ; Crop yield ; Degradation ; Enzymatic activity ; Enzymes ; Grain ; Hydrogen peroxide ; Leaf area ; Leaves ; Life Sciences ; Malondialdehyde ; Peroxidase ; Pesticides ; Photosynthesis ; Photosynthetic pigments ; Pigments ; Plant Anatomy/Development ; Plant Physiology ; Plant protection ; Plant Sciences ; Protected plants ; Proteins ; Reactive oxygen species ; Seeds ; Semi arid areas ; Semiarid lands ; Senescence ; Superoxide dismutase</subject><ispartof>Journal of plant growth regulation, 2019-09, Vol.38 (3), p.855-869</ispartof><rights>Springer Science+Business Media, LLC, part of Springer Nature 2018</rights><rights>Journal of Plant Growth Regulation is a copyright of Springer, (2018). All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c316t-77aaae94b1697448cb4ff279bd67ee365f5cfa0331443303d4c8ba8b355c83383</citedby><cites>FETCH-LOGICAL-c316t-77aaae94b1697448cb4ff279bd67ee365f5cfa0331443303d4c8ba8b355c83383</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00344-018-9897-5$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00344-018-9897-5$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Ahmad, Irshad</creatorcontrib><creatorcontrib>Kamran, Muhammad</creatorcontrib><creatorcontrib>Su, Wennan</creatorcontrib><creatorcontrib>Haiqi, Wang</creatorcontrib><creatorcontrib>Ali, Shahzad</creatorcontrib><creatorcontrib>Bilegjargal, Bayasgalan</creatorcontrib><creatorcontrib>Ahmad, Shakeel</creatorcontrib><creatorcontrib>Liu, Tiening</creatorcontrib><creatorcontrib>Cai, Tie</creatorcontrib><creatorcontrib>Han, Qingfang</creatorcontrib><title>Application of Uniconazole Improves Photosynthetic Efficiency of Maize by Enhancing the Antioxidant Defense Mechanism and Delaying Leaf Senescence in Semiarid Regions</title><title>Journal of plant growth regulation</title><addtitle>J Plant Growth Regul</addtitle><description>The degradation of photosynthetic pigments leads to leaf senescence and thus grain yield losses. We determined whether the application of uniconazole to maize in semiarid regions could reduce the degradation of photosynthetic pigments by enhancing the antioxidant defense system. We conducted a field study in the summers of 2015 and 2016 where seeds were soaked in uniconazole at concentrations of 0 (CK1), 25 (S1), 50 (S2), and 75 (S3) mg kg
−1
and foliar sprayed at concentrations of 0 (CK2), 25 (F1), 50 (F2), and 75 (F3) mg L
−1
at the eight-leaf stage. The application of uniconazole significantly improves the chlorophyll content, soluble protein content, and net photosynthetic rate, where the maximum values were obtained with the S1 and F1 treatments. Uniconazole significantly improved the activities of antioxidant enzymes comprising superoxide dismutase, peroxidase, and catalase, but reduced that of malondialdehyde (MDA) and the accumulation of reactive oxygen species (ROS) during the leaf senescence process. Treatments S1 and F1 had higher antioxidant enzyme activities but reduced MDA, superoxide radical, and hydrogen peroxide contents. Uniconazole significantly reduced leaf senescence in leaves in the bottom layer, while also increasing the middle layer leaf area and decreasing the top layer leaf area. The degradation of photosynthetic pigments was reduced by uniconazole because the enhanced antioxidant activities of enzymes protected plants from harmful ROS. Uniconazole significantly improved the photosynthetic traits, antioxidant defense system, and grain yield in maize in semiarid regions, where the most effective treatment was S1.</description><subject>Agriculture</subject><subject>Antioxidants</subject><subject>Biomedical and Life Sciences</subject><subject>Catalase</subject><subject>Chlorophyll</subject><subject>Corn</subject><subject>Crop yield</subject><subject>Degradation</subject><subject>Enzymatic activity</subject><subject>Enzymes</subject><subject>Grain</subject><subject>Hydrogen peroxide</subject><subject>Leaf area</subject><subject>Leaves</subject><subject>Life Sciences</subject><subject>Malondialdehyde</subject><subject>Peroxidase</subject><subject>Pesticides</subject><subject>Photosynthesis</subject><subject>Photosynthetic pigments</subject><subject>Pigments</subject><subject>Plant Anatomy/Development</subject><subject>Plant Physiology</subject><subject>Plant protection</subject><subject>Plant Sciences</subject><subject>Protected plants</subject><subject>Proteins</subject><subject>Reactive oxygen species</subject><subject>Seeds</subject><subject>Semi arid areas</subject><subject>Semiarid lands</subject><subject>Senescence</subject><subject>Superoxide dismutase</subject><issn>0721-7595</issn><issn>1435-8107</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp1kd1KAzEQhYMoWKsP4F3A69VkkzTZy6L1B1oUf65DNjtpI21SN1tx-0A-pykVvPJqmOE7Z2Y4CJ1TckkJkVeJEMZ5QagqKlXJQhygAeVMFIoSeYgGRJa0kKISx-gkpXdCaG7kAH2P1-ult6bzMeDo8FvwNgazjUvAD6t1Gz8h4adF7GLqQ7eAzls8cc5bD8H2O8XM-C3guseTsDDB-jDHmcPjkC2_fGNCh2_AQUiAZ2Az4tMKm9Dk6dL0O3wKxuEXCJBsNgXsQ-5W3rS-wc8wz5elU3TkzDLB2W8dorfbyev1fTF9vHu4Hk8Ly-ioK6Q0xkDFazqqJOfK1ty5UlZ1M5IAbCScsM4QxijnjBHWcKtqo2omhFWMKTZEF3vf_PnHBlKn3-OmDXmlLqkgJVOiKjNF95RtY0otOL1u_cq0vaZE7-LQ-zh0jkPv4tAia8q9JmU2zKH9c_5f9AN8SJAs</recordid><startdate>20190901</startdate><enddate>20190901</enddate><creator>Ahmad, Irshad</creator><creator>Kamran, Muhammad</creator><creator>Su, Wennan</creator><creator>Haiqi, Wang</creator><creator>Ali, Shahzad</creator><creator>Bilegjargal, Bayasgalan</creator><creator>Ahmad, Shakeel</creator><creator>Liu, Tiening</creator><creator>Cai, Tie</creator><creator>Han, Qingfang</creator><general>Springer US</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7X2</scope><scope>7X7</scope><scope>7XB</scope><scope>8FE</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>LK8</scope><scope>M0K</scope><scope>M0S</scope><scope>M7P</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope></search><sort><creationdate>20190901</creationdate><title>Application of Uniconazole Improves Photosynthetic Efficiency of Maize by Enhancing the Antioxidant Defense Mechanism and Delaying Leaf Senescence in Semiarid Regions</title><author>Ahmad, Irshad ; Kamran, Muhammad ; Su, Wennan ; Haiqi, Wang ; Ali, Shahzad ; Bilegjargal, Bayasgalan ; Ahmad, Shakeel ; Liu, Tiening ; Cai, Tie ; Han, Qingfang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c316t-77aaae94b1697448cb4ff279bd67ee365f5cfa0331443303d4c8ba8b355c83383</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Agriculture</topic><topic>Antioxidants</topic><topic>Biomedical and Life Sciences</topic><topic>Catalase</topic><topic>Chlorophyll</topic><topic>Corn</topic><topic>Crop yield</topic><topic>Degradation</topic><topic>Enzymatic activity</topic><topic>Enzymes</topic><topic>Grain</topic><topic>Hydrogen peroxide</topic><topic>Leaf area</topic><topic>Leaves</topic><topic>Life Sciences</topic><topic>Malondialdehyde</topic><topic>Peroxidase</topic><topic>Pesticides</topic><topic>Photosynthesis</topic><topic>Photosynthetic pigments</topic><topic>Pigments</topic><topic>Plant Anatomy/Development</topic><topic>Plant Physiology</topic><topic>Plant protection</topic><topic>Plant Sciences</topic><topic>Protected plants</topic><topic>Proteins</topic><topic>Reactive oxygen species</topic><topic>Seeds</topic><topic>Semi arid areas</topic><topic>Semiarid lands</topic><topic>Senescence</topic><topic>Superoxide dismutase</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ahmad, Irshad</creatorcontrib><creatorcontrib>Kamran, Muhammad</creatorcontrib><creatorcontrib>Su, Wennan</creatorcontrib><creatorcontrib>Haiqi, Wang</creatorcontrib><creatorcontrib>Ali, Shahzad</creatorcontrib><creatorcontrib>Bilegjargal, Bayasgalan</creatorcontrib><creatorcontrib>Ahmad, Shakeel</creatorcontrib><creatorcontrib>Liu, Tiening</creatorcontrib><creatorcontrib>Cai, Tie</creatorcontrib><creatorcontrib>Han, Qingfang</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Agricultural Science Collection</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>ProQuest Biological Science Collection</collection><collection>Agricultural Science Database</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Biological Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><jtitle>Journal of plant growth regulation</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ahmad, Irshad</au><au>Kamran, Muhammad</au><au>Su, Wennan</au><au>Haiqi, Wang</au><au>Ali, Shahzad</au><au>Bilegjargal, Bayasgalan</au><au>Ahmad, Shakeel</au><au>Liu, Tiening</au><au>Cai, Tie</au><au>Han, Qingfang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Application of Uniconazole Improves Photosynthetic Efficiency of Maize by Enhancing the Antioxidant Defense Mechanism and Delaying Leaf Senescence in Semiarid Regions</atitle><jtitle>Journal of plant growth regulation</jtitle><stitle>J Plant Growth Regul</stitle><date>2019-09-01</date><risdate>2019</risdate><volume>38</volume><issue>3</issue><spage>855</spage><epage>869</epage><pages>855-869</pages><issn>0721-7595</issn><eissn>1435-8107</eissn><abstract>The degradation of photosynthetic pigments leads to leaf senescence and thus grain yield losses. We determined whether the application of uniconazole to maize in semiarid regions could reduce the degradation of photosynthetic pigments by enhancing the antioxidant defense system. We conducted a field study in the summers of 2015 and 2016 where seeds were soaked in uniconazole at concentrations of 0 (CK1), 25 (S1), 50 (S2), and 75 (S3) mg kg
−1
and foliar sprayed at concentrations of 0 (CK2), 25 (F1), 50 (F2), and 75 (F3) mg L
−1
at the eight-leaf stage. The application of uniconazole significantly improves the chlorophyll content, soluble protein content, and net photosynthetic rate, where the maximum values were obtained with the S1 and F1 treatments. Uniconazole significantly improved the activities of antioxidant enzymes comprising superoxide dismutase, peroxidase, and catalase, but reduced that of malondialdehyde (MDA) and the accumulation of reactive oxygen species (ROS) during the leaf senescence process. Treatments S1 and F1 had higher antioxidant enzyme activities but reduced MDA, superoxide radical, and hydrogen peroxide contents. Uniconazole significantly reduced leaf senescence in leaves in the bottom layer, while also increasing the middle layer leaf area and decreasing the top layer leaf area. The degradation of photosynthetic pigments was reduced by uniconazole because the enhanced antioxidant activities of enzymes protected plants from harmful ROS. Uniconazole significantly improved the photosynthetic traits, antioxidant defense system, and grain yield in maize in semiarid regions, where the most effective treatment was S1.</abstract><cop>New York</cop><pub>Springer US</pub><doi>10.1007/s00344-018-9897-5</doi><tpages>15</tpages></addata></record> |
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| subjects | Agriculture Antioxidants Biomedical and Life Sciences Catalase Chlorophyll Corn Crop yield Degradation Enzymatic activity Enzymes Grain Hydrogen peroxide Leaf area Leaves Life Sciences Malondialdehyde Peroxidase Pesticides Photosynthesis Photosynthetic pigments Pigments Plant Anatomy/Development Plant Physiology Plant protection Plant Sciences Protected plants Proteins Reactive oxygen species Seeds Semi arid areas Semiarid lands Senescence Superoxide dismutase |
| title | Application of Uniconazole Improves Photosynthetic Efficiency of Maize by Enhancing the Antioxidant Defense Mechanism and Delaying Leaf Senescence in Semiarid Regions |
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